Mother loses youth; gets some compensation (7)
I believe the answer is:
'some compensation' is the definition.
(damages is a kind of compensation)
'mother loses youth' is the wordplay.
'mother' becomes 'dam' (female parent of an animal).
'loses youth' becomes 'ages'.
'gets' acts as a link.
(Other definitions for damages that I've seen before include "weakens" , "Money awarded as compensation" , "Hurts" , "Harms" , "Money paid in compensation for loss or injury" .)